Best friend of 2 years turned out to be toxic.

We trusted each other with anything. She was always by my side and we had similar interests... only for her to start acting dry and distant. When I asked what was wrong, she blocked me and then on an alternate account, told me to stop talking to her (which she did first, I already stopped) and that we weren't friends anymore. She then told me to kill myself and called me a dumb bitch. She also enjoys seeing negative and painful reactions out of me and knows I'm suicidal but told me that anyway.